Urumov G, Tsenov I
Vutr Boles. 1986;25(6):51-7.
Intracavitary electrophysiological study of the heart (IES) was carried out in 27 patients with WPW syndrome. In 17/27, permanent tachycardia, reentry type was reproduced, in 1/27--unstable and in 2/27--echo phenomenon, in 1/27--atrial fibrillation. In 6/27 no tachycardia was reproduced. In I patient the tachycardia, type reentry "detained" in atrial flutter, and in 2--in ventricular tachycardia (unstable). In all patients IES established the presence of additional connections between auricles and ventricles: to left auricle--9 patients (5 obscure connections out of them), to right auricle--6 patients, to septum--10 patients, James connection--1 and connection of Mahaim--1 patient. IES is a valuable method for reproduction of tachycardia in the existence of anatomic base (additional connection) and proper electrophysiological characteristics (short refractory phases). In parallel with tachycardia, reentry type, atrial and ventricular tachycardia could develop in the patients with WPW, making use of the additional connection. IES contributes to the elucidation of numerous diagnostic and therapeutic problems in the patients with WPW.
对27例预激综合征患者进行了心脏腔内电生理研究（IES）。27例中有17例重现了折返型永久性心动过速，1例出现不稳定情况，2例出现回波现象，1例出现心房颤动。27例中有6例未重现心动过速。1例患者的折返型心动过速“阻滞”于心房扑动，2例患者出现室性心动过速（不稳定）。在所有患者中，IES均证实心房与心室之间存在附加连接：连接左心房的有9例患者（其中5例连接不明确），连接右心房的有6例患者，连接间隔的有10例患者，James连接1例，Mahaim连接1例。IES是一种在存在解剖学基础（附加连接）和适当电生理特征（短不应期）时重现心动过速的有价值方法。在预激综合征患者中，利用附加连接，与折返型心动过速、房性和室性心动过速并行，可能会发生。IES有助于阐明预激综合征患者的众多诊断和治疗问题。
